The only card in the deck that is a diamond and a king is the king of diamonds. Thus the probability will be `1/52` .

P(A and B)=P(A)P(B)

The probability of getting a diamond is `13/52=1/4`

The probability of getting a king is `4/52=1/13`

P(diamond and king)=`1/4*1/13=1/52`

(b) Find the probability of getting a diamond or a king.

Here there are 13 diamonds and 4 kings. But we have counted the king of diamonds in both groups. Taking this into account there are 13+4-1=16 cards that meet the conditions. Thus there is a probability of `16/52=4/13` or getting a diamond or a king.

** Choosing a diamond and choosing a king are not mutually exclusive **